Disturbance and nutrients synchronise kelp forests across scales through interacting Moran effects,Ecology Letters

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Disturbance and nutrients synchronise kelp forests across scales through interacting Moran effects
Ecology Letters ( IF 7.6 ) Pub Date : 2022-06-30 , DOI: 10.1111/ele.14066
Max C N Castorani ₁ , Tom W Bell _{2,

3} , Jonathan A Walter ₁ , Daniel C Reuman _{4,

5,

6} , Kyle C Cavanaugh ₇ , Lawrence W Sheppard _{4,

8}

Affiliation

Spatial synchrony is a ubiquitous and important feature of population dynamics, but many aspects of this phenomenon are not well understood. In particular, it is largely unknown how multiple environmental drivers interact to determine synchrony via Moran effects, and how these impacts vary across spatial and temporal scales. Using new wavelet statistical techniques, we characterised synchrony in populations of giant kelp Macrocystis pyrifera, a widely distributed marine foundation species, and related synchrony to variation in oceanographic conditions across 33 years (1987–2019) and >900 km of coastline in California, USA. We discovered that disturbance (storm-driven waves) and resources (seawater nutrients)—underpinned by climatic variability—act individually and interactively to produce synchrony in giant kelp across geography and timescales. Our findings demonstrate that understanding and predicting synchrony, and thus the regional stability of populations, relies on resolving the synergistic and antagonistic Moran effects of multiple environmental drivers acting on different timescales.

中文翻译：

干扰和营养物质通过相互作用的莫兰效应使海带森林在不同尺度上同步

空间同步是种群动态的一个普遍存在的重要特征，但这种现象的许多方面尚不清楚。特别是，目前尚不清楚多个环境驱动因素如何相互作用以通过莫兰效应确定同步性，以及这些影响如何在空间和时间尺度上变化。利用新的小波统计技术，我们描述了巨藻巨囊藻（一种广泛分布的海洋基础物种）种群的同步性，以及与美国加利福尼亚州 33 年（1987-2019 年）和超过 900 公里海岸线的海洋条件变化的相关同步性。。我们发现，以气候变化为基础的干扰（风暴驱动的波浪）和资源（海水营养物质）单独且相互作用地作用，从而在跨地理和时间尺度的巨型海带中产生同步性。我们的研究结果表明，理解和预测同步性以及人口的区域稳定性依赖于解决在不同时间尺度上作用的多个环境驱动因素的协同和拮抗莫兰效应。

更新日期：2022-06-30

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